Table 1 Demographic and clinical characteristics of hemodialysis patients according to change in physical activity
| Â | All | Becoming more active group | Stable group | Becoming less active group | P value |
|---|---|---|---|---|---|
|  | (n = 192) | (n = 51) | (n = 94) | (n = 47) | |
Age, years | 64.3 ± 10.3 | 65.6 ± 10.7 | 63.0 ± 9.6 | 67.6 ± 10.2 | < 0.01 |
Male,% | 96 (50.0%) | 23 (45.1%) | 55 (58.5%) | 18 (38.3%) | 0.06 |
Time on hemodialysis, years | 6.5 ± 7.2 | 5.9 ± 6.7 | 6.4 ± 6.9 | 7.4 ± 8.3 | 0.59 |
Body mass index, kg/m2 | 21.3 ± 3.3 | 21.5 ± 3.3 | 21.4 ± 3.2 | 20.9 ± 3.5 | 0.62 |
Primary kidney disease, % | 0.30 | ||||
 Glomerulonephritis | 63 (32.8%) | 14 (27.5%) | 28 (29.8%) | 21 (44.7%) |  |
 Diabetes | 68 (35.4%) | 23 (45.1%) | 29 (30.9%) | 16 (34.0%) |  |
 Other | 24 (12.5%) | 7 (13.7%) | 12 (12.8%) | 4 (8.5%) |  |
 Unknown | 20 (10.4%) | 3 (5.9%) | 14 (14.9%) | 3 (6.4%) |  |
 Hypertension | 17 (8.8%) | 4 (7.8%) | 10 (10.6%) | 3 (6.4%) |  |
Comorbidities, % | |||||
 Diabetes | 84 (43.8%) | 25 (49.0%) | 36 (38.3%) | 23 (48.9%) | 0.39 |
 Cerebrovascular accident/TIA | 66 (34.4%) | 17 (33.3%) | 13 (13.8%) | 36 (76.6%) | 0.02 |
 atherosclerotic heart disease | 50 (26.0%) | 15 (29.4%) | 17 (18.1%) | 18 (38.3%) | 0.04 |
 Congestive heart failure | 24 (12.5%) | 10 (19.6%) | 10 (10.6%) | 4 (8.5%) | 0.20 |
Comorbidity index, score | 5.0 ± 3.2 | 5.7 ± 3.4 | 4.6 ± 3.0 | 5.0 ± 3.3 | 0.13 |
Serum albumin, g/dL | 4.0 ± 0.3 | 4.0 ± 0.4 | 4.0 ± 0.3 | 3.9 ± 0.4 | 0.62 |
Physical activity, steps | |||||
 Baseline | 4421 ± 3048 | 2951 ± 2300 | 5261 ± 3274 | 4335 ± 2703 | <0.01 |
 12 months | 4291 ± 3211 | 5028 ± 3817 | 4929 ± 3003 | 2214 ± 1701 | <0.01 |